Avian hepatitis E virus, vaccines and methods of protecting against avian hepatitis-splenomegaly syndrome and mammalian hepatitis E
    2.
    发明授权
    Avian hepatitis E virus, vaccines and methods of protecting against avian hepatitis-splenomegaly syndrome and mammalian hepatitis E 有权
    禽类戊型肝炎病毒,疫苗和防止禽流感 - 脾肿大综合征和哺乳动物性肝炎的方法

    公开(公告)号:US07842298B2

    公开(公告)日:2010-11-30

    申请号:US12507576

    申请日:2009-07-22

    摘要: The present invention relates to a novel isolated avian hepatitis E virus having a nucleotide sequence set forth in SEQ ID NO:1 or its complementary strand. The invention further concerns immunogenic compositions comprising this new virus or recombinant products such as the nucleic acid and vaccines that protect an avian or mammalian species from viral infection or hepatitis-splenomegaly syndrome caused by the hepatitis E virus. Also included in the scope of the invention is a method for propagating, inactivating or attenuating a hepatitis E virus comprising inoculating an embryonated chicken egg with a live, pathogenic hepatitis E virus and recovering the virus or serially passing the pathogenic virus through additional embryonated chicken eggs until the virus is rendered inactivated or attenuated. Further, this invention concerns diagnostic reagents for detecting an avian hepatitis E viral infection or diagnosing hepatitis-splenomegaly syndrome in an avian or mammalian species comprising an antibody raised or produced against the immunogenic compositions and antigens such as ORF2 proteins expressed in a baculovirus vector, E. coli, etc. The invention additionally encompasses methods for detecting avian HEV nucleic acid sequences using nucleic acid hybridization probes or oligonucleotide primers for polymerase chain reaction (PCR).

    摘要翻译: 本发明涉及具有SEQ ID NO:1所示核苷酸序列或其互补链的新颖的分离型禽类戊型肝炎病毒。 本发明还涉及包含这种新病毒或重组产物(例如核酸和疫苗)的免疫原性组合物,其保护禽类或哺乳动物物种免受由戊型肝炎病毒引起的病毒感染或肝炎 - 脾肿大综合症。 本发明的范围还包括传播,灭活或减毒戊型肝炎病毒的方法,包括用活的致病性戊型肝炎病毒接种含胚鸡蛋,并回收该病毒或通过另外的含胚鸡蛋串联通过病原性病毒 直到病毒灭活或减毒。 此外,本发明涉及用于检测禽流感病毒感染或诊断禽流感或哺乳动物物种中的肝炎 - 脾肿大综合征的诊断试剂,其包含针对免疫原性组合物产生或产生的抗体,例如杆状病毒载体中表达的ORF2蛋白 大肠杆菌等。本发明另外包括使用核酸杂交探针或用于聚合酶链反应(PCR)的寡核苷酸引物检测禽类HEV核酸序列的方法。